Squaring.net >> IRTS >> PPIRTSS >> Order 18

Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:144AL GHM

Order: 18

Horizontal side: 144 Vertical side: 144

Elements: 1√2, 2, 7√2, 9√2, 14, 18, 14√2, 19√2, 28, 20√2, 38, 28√2, 44, 58, 72, 58√2, 86, 72√2.

Code: 865 0 58 724 72 72 723 144 72 144 86 58 143 100 58 72 107 65 441 144 72 90 107 65 587 0 58 580 58 58 204 78 38 16 97 57 27 98 58 190 97 57 181 116 56 282 144 28 381 116 38 283 144 0

The properties below may precede order:side in a tiling's title:

Credit for Discovery

Just three people are credited with the discovery of Primitive Perfects:

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)

William T. Tutte (WTT, Canada, 1917-2002) (15:44AI, 17:136AJ and 19:56AJ only)

86
72√2
72
14√2
14
7√2
44
9√2
58
58√2
20√2
1√2
2
19√2
18
28√2
38
28